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21 lines
976 B
C
21 lines
976 B
C
#include "proto.h"
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/*
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Null compressor: stores data uncompressed, using literal (0) commands only.
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Methods defined: 2
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Flags values: 0 = split a trailing 33-to-64-byte block at the end into two short blocks; 1 = don't
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*/
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struct command * store_uncompressed (__attribute__((unused)) const unsigned char * data, __attribute__((unused)) const unsigned char * bitflipped, unsigned short * size, unsigned flags) {
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unsigned short position, block, remainder = *size;
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struct command * result = NULL;
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*size = 0;
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for (position = 0; remainder; position += block, remainder -= block) {
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block = (remainder > MAX_COMMAND_COUNT) ? MAX_COMMAND_COUNT : remainder;
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if (!(flags & 1) && (block <= (2 * SHORT_COMMAND_COUNT)) && (block > SHORT_COMMAND_COUNT)) block = SHORT_COMMAND_COUNT;
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result = realloc(result, sizeof(struct command) * (1 + *size));
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result[(*size) ++] = (struct command) {.command = 0, .count = block, .value = position};
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}
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return result;
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}
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